关键词: 彩虹/
气泡/
空间自相位调制/
相干干涉
English Abstract
Coherent rainbows come from liquids
Sun Tian-Jiao1,2,Shang Ya-Xuan1,2,
Qian Xuan1,2,
Ji Yang1,2
1.State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
2.College of Materials Science and Opto-Electronic Technology, School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
Fund Project:Project supported by the National Key Research and Development Program of China (Grant No. 2016YFA0301202), the National Natural Science Foundation of China (Grant No. 11674311), and K. C. Wong Education Foundation, China.Received Date:15 December 2017
Accepted Date:18 December 2017
Published Online:05 February 2018
Abstract:When the highly-intensive and highly-directional white light from pulsed fiber laser is focused into water, many directional and colorful rings, coherent rainbows, are observed. The laser generates bubbles with similar sizes in the water, which serve as scatters. The intensive light leads to spatial self-phase modulation and thus generates the coherent rainbows. Such a phenomenon has been observed in many kinds of liquids.
Keywords: rainbow/
bubble/
spatial self-phase modulation/
coherent interference
